How much actual light do I need for 75 gal bowfront? I have 1 long strip with a 50/50 bulb but now I have no glass on the right side due to skimmer only fitting on the side of tank, the left side is cacked and no handle to lift up? I am putting in an order, should I get the stand above LED lights with legs? Good God somwone HELP!! 18-24 inch would need 4 of them at $89 a piece? Just how much light do I need? THANKS a BUNCH!!!